pi-hole/advanced/Scripts/version.sh

#!/usr/bin/env bash
# Pi-hole: A black hole for Internet advertisements
# (c) 2015, 2016 by Jacob Salmela
# Network-wide ad blocking via your Raspberry Pi
# http://pi-hole.net
# shows version numbers
#
# Pi-hole is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.

# Flags:
latest=false
current=false

normalOutput() {
  piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
  webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)

  piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
  webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')

  echo "::: Pi-hole version is ${piholeVersion} (Latest version is ${piholeVersionLatest})"
  echo "::: Web-Admin version is ${webVersion} (Latest version is ${webVersionLatest})"
}

webOutput() {
  for var in "$@"; do
    case "${var}" in
      "-l" | "--latest"    ) latest=true;;
      "-c" | "--current"   ) current=true;;
      *                    ) echo "::: Invalid Option!"; exit 1;
    esac
  done

  if [[ "${latest}" == true && "${current}" == false ]]; then
    webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
    echo ${webVersionLatest}
  elif [[ "${latest}" == false && "${current}" == true ]]; then
    webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
    echo ${webVersion}
  else
    webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
    webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
    echo "::: Web-Admin version is $webVersion (Latest version is $webVersionLatest)"
  fi
}

coreOutput() {
  for var in "$@"; do
    case "${var}" in
      "-l" | "--latest"    ) latest=true;;
      "-c" | "--current"   ) current=true;;
      *                    ) echo "::: Invalid Option!"; exit 1;
    esac
  done

  if [[ "${latest}" == true && "${current}" == false ]]; then
    piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
    echo ${piholeVersionLatest}
  elif [[ "${latest}" == false && "${current}" == true ]]; then
    piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
    echo ${piholeVersion}
  else
    piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
    piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
    echo "::: Pi-hole version is $piholeVersion (Latest version is $piholeVersionLatest)"
  fi
}

helpFunc() {
  cat << EOM
:::
::: Show Pi-hole/Web Admin versions
:::
::: Usage: pihole -v [ -a | -p ] [ -l | -c ]
:::
::: Options:
:::  -a, --admin          Show both current and latest versions of web admin
:::  -p, --pihole         Show both current and latest versions of Pi-hole core files
:::  -l, --latest         (Only after -a | -p) Return only latest version
:::  -c, --current        (Only after -a | -p) Return only current version
:::  -h, --help           Show this help dialog
:::
EOM
  exit 1
}

if [[ $# = 0 ]]; then
  normalOutput
fi

for var in "$@"; do
  case "${var}" in
  "-a" | "--admin"     ) shift; webOutput "$@";;
  "-p" | "--pihole"    ) shift; coreOutput "$@" ;;
  "-h" | "--help"      ) helpFunc;;
  esac
done